I’d like to find a waterproof connector with two pins for the battery tubes.
It will be to change easily the completed battery tubes instead of to open the tubes on site.
The best will be to cut the wires and insert the connectors…
And so the same for the theter with two pins and with four or six wires.
Two for the normal theter (yellow wires) and two or four more for the sonar I am building at this moment.